Showers and storms are expected to increase in coverage as an east coast sea breezes moves inland on Wednesday morning.
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The greatest shower and storm chances are located inland, according to NWS Melbourne.
Showers are storms are likely between 3 p.m and 5 p.m., with storm hazards including lightning, gusty winds and heavy downpours.
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Temperature highs are in the upper 80s to low 90s with peak heat indices at 100+ degrees.
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There is a high risk of rip currents at Volusia and northern Brevard beaches.
All other beaches contain only a moderate risk of rip currents.